Four undergraduates from East China's Anhui University chose not to close their dormitory's window to protect three fledglings nesting on the top rail of the window in the cold winter, East Anhui Morning Post reported.

"We all feel very cold when the north wind blows into our dormitory through the window, but we won't close the window until the fledglings grow old enough, since their nest will be broken down if we close the window," said Wang Yachao at the dormitory.

The fledglings curling up in the palm-sized nest have been there since the middle of October, when "I found a grayish brown bird and three eggs in a nest on the top rail of our half-open window," said Wang.

In the face of the increasingly cold weather, Wang and his roommates still haven't changed their mind, having overruled some ideas they had.

"We tried to relocate the whole nest to another place, but the nest made of twigs is too fragile to stand a move. And we also tried to paste paper on the window to keep out the cold, but the method seemed to endanger the fledglings' lives," said Zhang Binquan, whose bed is the nearest to the window.

"We all hope someone can come up with an idea, which not only protects the fledglings but also lets us close the door in the winter. Or we will close the window only when the fledglings are old enough to fly away," said the four students.